On the justification of the Imamat by the Ismailis, the Duodecimans and the Druzes. ; DETAILS: "Al Sh'ia ou l'idée théocratique." In Les principales sectes musulmanes. Textes et Etudes, 7. Beirut: Imprimerie Catholique. [On the justification of the Imamat by the Ismailis, the Duodecimans and the Druzes. ]